[Asterisk-Users] How can I get a recording from a CD to my asterisk digital assistant

[Davi-Ann]

I got someone to record the messages we want for our auto-attendant menu on 
a CD.

All  I have to do not is to upload the files into the asterisk box, however 
the format is not recognized by the Asterisk box.

Question 1) What formats should the sound file be, so I can upload it to my 
asterisk box?

Thanks
--Davi-Ann